/**
 * Braille style sheet for United States and Canada (BANA)
 *
 * For more information see https://daisy.github.io/braille-stylesheets/bana
 */

$allow-text-overflow-trimming: true;

@namespace epub url(http://www.idpf.org/2007/ops);

@-daisy-text-transform {
	system: ueb;
}

@page {
	size: 40 25;
	margin-bottom: 0;
	@top-center {
		content: string(running-header); // the running-header text must be set by the custom style sheet
	}
	@top-right {
		content: "   " string(print-page);
	}
	@bottom-right {
		content: "   " counter(page);
	}
}

@page transcriber-generated {
	counter-increment: transcriber-generated-page;
	@top-center {
		content: none;
	}
	@top-right {
		content: none;
	}
	@bottom-right {
		content: "   t" counter(transcriber-generated-page);
	}
}

@page toc {
	// do not allow TOC entries on same line as page number (footer)
	margin-bottom: 1;
	// the rest is the same as transcriber-generated
	counter-increment: transcriber-generated-page;
	@top-center {
		content: none;
	}
	@top-right {
		content: none;
	}
	@bottom-right {
		content: "   t" counter(transcriber-generated-page);
	}
}

@page preliminary {
	counter-increment: preliminary-page;
	@top-center {
		content: none;
	}
	@top-right {
		content: none;
	}
	@bottom-right {
		content: "   p" counter(preliminary-page);
	}
}

@-daisy-volume {
	@begin {
		content: -daisy-flow(transcriber-generated, document)
		         -daisy-flow(volume-toc, document);
		counter-set: transcriber-generated-page 1
		             preliminary-page 1;
	}
}
@-daisy-volume:first {
	@begin {
		content: -daisy-flow(transcriber-generated, document) // the transcriber generated and other preliminary
		         -daisy-flow(document-toc, document)          // content must be set by the custom style sheet,
		         -daisy-flow(preliminary, document);          // and must be given the corresponding page style
	}
}

%h1 {
	page-break-before: always;
	text-align: center;
	margin-left: 3;
	margin-right: 3;
	margin-bottom: 1;
}

%h2 {
	margin-left: 4;
}

%h3 {
	margin-left: 6;
}

%h1, %h2, %h3 {
	margin-top: 1;
	page-break-after: avoid;
}

$h-mapping: (
	h1: h1,
	h2: h2,
	h3: [h3, h4, h5, h6]
) !default;

@for $rank from 1 through 3 {
	@if map-kas-key($h-mapping, h#{$rank}) {
		$selector: map-get($h-mapping, h#{$rank});
		#{$selector} {
			@extend %h#{$rank};
		}
	}
}

p {
	text-indent: 2;
}

li {
	text-indent: -2;
	margin-left: 2;
}

ul, ol, list {
	margin-top: 1;
	margin-bottom: 1;
	orphans: 2;

	%h1 + &,
	%h2 + &,
	%h3 + & {
		margin-top: 0;
		> li:first-child {
			page-break-inside: avoid;
		}
	}
}

.page-front,
.page-normal,
.page-special,
[epub|type='pagebreak'],
pagenum {
	display: block;
	&:-daisy-top-of-page {
		display: none;
	}
	&::before {
		content: leader("⠤"); // FIXME: remove space before number
	}
	margin-left: -40; // this is to make sure the line always starts all the way on the left
	string-set: print-page content();
	&[title] {
		string-set: print-page attr(title);
	}
	&[aria-label] {
		&:empty::before {
			content: leader("⠤") attr(aria-label);
		}
		string-set: print-page attr(aria-label);
	}
}

$toc-depth: 2 !default;
@import "http://www.daisy.org/pipeline/modules/braille/html-to-pef/_generate-toc.scss";

#generated-document-toc,
#generated-volume-toc {
	page: toc;
	&::-obfl-on-toc-start {
		content: "Contents";
		display: block;
		text-align: center;
		margin: 0 3 1 3;
	}
	&::-obfl-on-volume-start {
		content: "Volume " counter(-obfl-started-volume-number);
		display: block;
		text-align: center;
		margin: 1 3;
	}
	li {
		-obfl-right-text-indent: 6;
		a[href]::after {
			content: " " leader("⠐") " " target-counter(attr(href), page);
		}
		br::before { content: " " }
	}
	ul, ol, list {
		margin: 0;
	}
}